Couple things:
1) on workstation installs / server migrations, do you include that in your service agreement? How do you cap it? I guess to be honest, if someone is deploying a new workstation, we will just pop in and help. It's easier than dealing with a bad install after the fact.
For a server migration, we typically charge $1,000 + depending upon what all is involved. Too much to do with security setting, anti-virus, jacking with the IT guys, integrations, etc.
2) I still like BizNet but the installation process is still a lot more convoluted that it should be. It sure works nice afterwards but don't confuse it with FRx. FRx did some really nice things that take some work in BizNet. Nothing is ever simple. ;-(